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Passing the Alaska DMV CDL Air Brakes Test is essential for operating large commercial motor vehicles (CMVs). Our CDL Air Brakes Practice Tests are designed to prepare you for success, helping you confidently pass your knowledge exam on the first attempt. If you don’t pass, your CDL will include the restriction “L,” barring you from operating CMVs with air brakes. Since semi-trucks and tractor-trailers are typically equipped with air brakes, obtaining this endorsement is essential to operate those vehicles. The air brakes qualification is a requirement of most companies due to the commonality of this braking system. In Alaska, with vast mountain ranges like the Alaska Range and the Chugach Mountains and remote and wind-swept highways, such as the Dalton Highway and the Seward Highway, air brakes are essential. Many roads in Alaska are isolated, and emergency services can be far away, so air brakes are crucial for drivers on these isolated roads.
Chief Educational Researcher, Driving‑Tests.org (ACES member)
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Industries across the Last Frontier, like oil and gas, fishing, mining, and tourism, rely on drivers with the air brake qualification. Companies such as Carlile Transportation and Alaska Freight Lines (both headquartered in Anchorage) require certified drivers for transporting goods to remote areas. Charter bus companies (like Alaska Coach Tours), school buses, and the construction industry also depend on air brake-certified drivers to safely navigate. The oil industry includes companies like BP and ConocoPhillips that require qualified drivers for transporting heavy equipment. Tourism and sightseeing companies offer tours in rugged and mountainous areas, requiring air-brake-qualified drivers for passenger transport. Simply put, the “L” restriction makes operating CMVs equipped with air brakes illegal, thus limiting your job prospects.
The official two-part DMV test covers the parts of an air brake system, effective operation, and air-brake inspection procedures. The skills test requires you to physically inspect an air brake system, identify its components, and operate a vehicle equipped with air brakes. This test includes checking air pressure, testing the brakes for leaks, and more. The multiple-choice written test requires a score of at least 80% to pass and features questions directly from material found in the state’s CDL manual.
Our CDL Air Brakes Practice Tests mimic the content and format you will face on the DMV test. Our practice test questions and answers provide responses in real time so you can learn quickly and be confident of passing your official exam.
Driver’s Ed is - nobody wants to set foot inside the DMV. That’s why millions of learners trust us for simple, visual, effective prep.
We are an officially recognized FMCSA Entry-Level Driver Training provider and a proud partner to over 2,500 libraries. We work with safety organizations like GHSA and the National Safety Council to help create safer roads for everyone.
Our trademarked system automatically saves questions you miss, creating personalized tests that target your weak spots until you’ve mastered the material.
Get smarter as you study. Our new AI-powered feedback provides detailed, question-level insights to help you understand the why behind each answer.
Go beyond the boring black-and-white manual. Our interactive handbook lets you read, listen with an MP3 audio version, or even chat with it to find the information you need, faster.
We build our practice questions from the current 2025 AK Driver Handbook and refine them using patterns recent test‑takers report.
Driver handbook • Knowledge‑test/permit overview • Fees & ID requirements • Office/appointment info
We mirror recurring themes (e.g., right‑of‑way traps, sign look‑alikes) and use similar distractors and wording styles.
We don’t collect or publish actual test items and we’re not affiliated with DMV.
